﻿using System;
using System.ComponentModel.Design;
using System.Diagnostics;
using System.Globalization;
using System.Runtime.InteropServices;
using Microsoft.VisualStudio.Shell;
using Microsoft.VisualStudio.Shell.Interop;

namespace ArrayVisualizerExt
{
  /// <summary>
  /// This is the class that implements the package exposed by this assembly.
  ///
  /// The minimum requirement for a class to be considered a valid package for Visual Studio
  /// is to implement the IVsPackage interface and register itself with the shell.
  /// This package uses the helper classes defined inside the Managed Package Framework (MPF)
  /// to do it: it derives from the Package class that provides the implementation of the 
  /// IVsPackage interface and uses the registration attributes defined in the framework to 
  /// register itself and its components with the shell.
  /// </summary>
  // This attribute tells the PkgDef creation utility (CreatePkgDef.exe) that this class is
  // a package.
  [PackageRegistration(UseManagedResourcesOnly = true)]
  // This attribute is used to register the information needed to show the this package
  // in the Help/About dialog of Visual Studio.
  [InstalledProductRegistration("#110", "#112", "1.0", IconResourceID = 400)]
  // This attribute is needed to let the shell know that this package exposes some menus.
  [ProvideMenuResource("Menus.ctmenu", 1)]
  // This attribute registers a tool window exposed by this package.
  [ProvideToolWindow(typeof(ArrayVisualizerToolWindow))]
  [Guid(GuidList.guidArrayVisualizerExtPkgString)]
  public sealed class ArrayVisualizerExtPackage : Package
  {
    /// <summary>
    /// Default constructor of the package.
    /// Inside this method you can place any initialization code that does not require 
    /// any Visual Studio service because at this point the package object is created but 
    /// not sited yet inside Visual Studio environment. The place to do all the other 
    /// initialization is the Initialize method.
    /// </summary>
    public ArrayVisualizerExtPackage()
    {
      Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "Entering constructor for: {0}", this.ToString()));
    }

    /// <summary>
    /// This function is called when the user clicks the menu item that shows the 
    /// tool window. See the Initialize method to see how the menu item is associated to 
    /// this function using the OleMenuCommandService service and the MenuCommand class.
    /// </summary>
    private void ShowToolWindow(object sender, EventArgs e)
    {
      // Get the instance number 0 of this tool window. This window is single instance so this instance
      // is actually the only one.
      // The last flag is set to true so that if the tool window does not exists it will be created.
      ToolWindowPane window = this.FindToolWindow(typeof(ArrayVisualizerToolWindow), 0, true);
      if ((null == window) || (null == window.Frame))
      {
        throw new NotSupportedException(Resources.CanNotCreateWindow);
      }
      IVsWindowFrame windowFrame = (IVsWindowFrame)window.Frame;
      Microsoft.VisualStudio.ErrorHandler.ThrowOnFailure(windowFrame.Show());
    }


    /////////////////////////////////////////////////////////////////////////////
    // Overridden Package Implementation
    #region Package Members

    /// <summary>
    /// Initialization of the package; this method is called right after the package is sited, so this is the place
    /// where you can put all the initialization code that rely on services provided by VisualStudio.
    /// </summary>
    protected override void Initialize()
    {
      Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "Entering Initialize() of: {0}", this.ToString()));
      base.Initialize();

      // Add our command handlers for menu (commands must exist in the .vsct file)
      OleMenuCommandService mcs = GetService(typeof(IMenuCommandService)) as OleMenuCommandService;
      if (null != mcs)
      {
        // Create the command for the tool window
        CommandID toolwndCommandID = new CommandID(GuidList.guidArrayVisualizerExtCmdSet, (int)PkgCmdIDList.arrayVisualizerTool);
        MenuCommand menuToolWin = new MenuCommand(ShowToolWindow, toolwndCommandID);
        mcs.AddCommand(menuToolWin);
        //GlobalVars.menuToolWin = menuToolWin;
      }
    }
    #endregion

  }
}
